Want to confirm what I've read on other sites....that the "new" max is the min line on the coolant degas bottle. If I read these other threads right, the level should be at min when at normal operating temp.

All liquids expand when they heat up. Since this is a pressurized system, you need a fair amount of vapor space or the pressure build can be too high (and you puke). The fill line is the minimum line. You will have no adverse performance issues from doing this.

Sorry, but that is not correct. you can easily do the liquid expansion calculations and see what 100 *F temperature rise will require in volume to keep the pressure from rising beyond 16 psig. It is between a quart and two IIRC.

Well chemistry class aside, I haven't had problem one since switching . Engine actually runs a little hotter (good) without overheating or puking.
The de-gas bottle is a bit higher when hot, but all good. And the other benefits are lifetime coolant without additives, no water, no rust, no scaling, and alot higher boiling point.

dont mean to hijack the thread but my coolant was a little low the other day (and with this being my first powerstroke) i added a little of the advanced auto green (ethalyne glycol) but heard u had to use only propylene glycol. I planned on getting a coolant flush tomorrow but what do i have to worry about with this crap? Ive only driven about 200miles since with no loads

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

The factory fill coolant is Ford Premium Gold. It is not propylene glycol - it is ethylene glycol. This misconception seemed to begin on Powerstrokehelp.com.

The green coolant will absolutely NOT protect your system from corrosion. Also, if you mix the green with the gold, you stand a very good chance of precipitating out silicates which will plug your oil cooler.

Flush it soon and use the VC-9 cleaner from the dealership.

Some folks are using the ELC coolants recommended by Navistar and seem to like them. As posted, lordVader likes the Evans (several others have also posted they like it). Hopefully they are effective in corrosion protection. Only long term usage data will tell.

Register Now

In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:

Password

Please enter a password for your user account. Note that passwords are case-sensitive.

Password:

Confirm Password:

Email Address

Please enter a valid email address for yourself.

Email Address:

OR

Log-in

User Name

Password

Remember Me?

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.